DS3231 High Accuracy DIY Digital Dot Matrix LED Alarm Clock Kit with Transparent Case Temperature Date Time Display This DIY alarm clock kit has 15 menu settings. You can set a variety of different functions through touch keys and wake up the clock by voice. You can also set different time modes(Hour:Minute:Second) or (Hour:Minute) according to different preferences. It has many types of animation effects and 16 common holi reminder functions.Features:Built-in touch key for easy operation.Large LED display to clearly show time, temperature, date, week, etc.Uses DS3231 high accuracy clock chip(with temperature compensation), it can still accurately travel time after powered by backup battery.Special dot matrix design, reminding important festivals and alarm clock function.The font, the time mode, the display effect and the animation effect can be switched freely.°C/°F selectable for temperature, 12H/24H time display mode.Can automatically adjust the brightness according to ambient light or specify it.Includes voice control and countdown function.With transparent case, components can be well protected.With a power cable, it is convenient for clock power supply.Specifications:Material: FR4Display Color: White / Red / Blue / Green(Optional)Power Supply: USB InterfaceDot Matrix Size(1pc): 2.8 * 4.2cm / 1.10 * 1.65inAcrylic Board Size(1pc): 16.6 * 4.2cm / 6.54 * 1.65inPackage Size: Approx. 17 * 11 * 3.5cm / 6.69 * 4.33 * 1.38inPackage Weight: Approx. 146g / 5.15ozPackage List:1 * Digital Alarm Clock Kit1 * USB Cable